HS1011 Data Communication And Networks

HS1011 Data Communication And Networks

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HS1011 Data Communication And Networks

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HS1011 Data Communication And Networks

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Course Code: HS1011
University: Holmes Institute

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Country: Australia

Question:

The purpose of this assignment is to exercise and develop skills required to analyse and design networks to address the need of clients. In this assessment, students will be able to..

Understand the basic concepts and principles of technology relating to electronic data communications and computer networking
Demonstrate a basic understanding of terminology of network communications technology, network operating systems and network applications
Articulate the difference between different types of network configurations and indicate the situations in which various options are best/most appropriate
Understand and explain different role of networking and network operating systems for information systems
Appreciate the need for different types of networks

Please address the following questions:

What type of topology should be used in this network? Why?
Will the network be peer to peer or server based? Please justify your answers.
How many computers will be attached to the network?
What kind of networking device is easiest to reconfigure? What kind offers the best access to the network medium’s bandwidth between pairs of devices?
Please draw a network diagram to represent the EBiz.com network (can be computer-drawn or hand-drawn).

As the network administrator for a growing ISP, you want to make efficient use of your network addresses. One of the network addresses IANA assigned to you is a Class C network of 197.14.88.0. you have decided to use the addresses in this Class C network to satisfy the IP address requirements of 16 corporate customer who need between 10 and 14 addresses each.
Calculate a subnet mask that meets their needs. Address the following questions:

What is the subnet mask? (1 mark)
List the first 4 subnet addresses the mask will create.

Answer:

Scenario 1:
Answer: 1
Here extended star topology is used for this type of network, because in this network three floors are connected. For better performance all computer are connected in extended start topology. Topology is a structure of a network for mange physically and logically to all network devices and systems. Physical means placement of devices and logical means flow of data. Five types of topologies used for network designing, as Star, tree, bus, ring and Mesh topologies. There are some hybrid topologies also used. Those are just merging of these topologies. Like star and bus topology merge and it is known as extended star topologies.
Answer 2:
Network will be server based, because all computers are connected from all systems for sharing customer’s information and billing databases. In case of peer-to-peer network, all systems are connected like ring topology and if any connections fail it means whole network is down.   
Answer 3:
In this Network, I can connect 254 computers with class- C subnet mask, which is start from 192.168.1.1 to 192.168.1.254. However, if I want to connect with servers also it means total 255 computers are there, so I used class B address, which are better for future.
Answer 4:
Router is best option for easiest reconfigure or Level-3 switch also work in this type of network. Cat-6 cables will be provide good data transfer but if data transfer is high then also used optical fiber for pairs of all devices. I can use some network monitor soft wares for managing user information according to their used id and password.
Answer 5:
For managing three floors of building, Extended Star Topology will be used for EBiz.com. So according to requirement it should be divided in three parts.
In first part, all first floor computers connected with a switch and mange with a server. In second floor, same start topology follow for connecting all second floor computers. Same architecture used for third floor computers. Also use three routers for three floors in the building or I can manage with a single router also.
Scenario 2:
Answer 1:
Before I start subnetting. I have to ask ourselves these two questions for managing network.
First is “how many subnet do I need?”
2n  is number of subnets.
Where, n is the number of 1’s in the subnetmask.
So in this scenario, I need three subnets are needed for this network.
Second question is “how many hosts per subnet do I need?” in an octet, 8 bits are there so when I take 2 bits for subnetting then 6 bits for hosts.
2m – 2 = number of hosts per subnet.
Where, y is the number of 0’s in the subnet mask.
So according to that I can manage this network by three subnets.
Answer 2:
A subnet mask allows networks to divide in small networks for security and performance purposes. Subnet mask is not an IP address; it is a part of network bits, which are used to create sub-networks. In this scenario, three routers are connected with three switches. Therefore, I can divide this network in three parts.
Answer 3:
Four subnets will be created for this scenario but I require only three for this scenario as EBiz.com has an office in a building with three floors.
These are the basic information about the network:

IP Address:

192.168.10.0

Network Address:

192.168.10.0

Usable Host IP Range:

192.168.10.1 – 192.168.10.62

Broadcast Address:

192.168.10.63

Total Number of Hosts:

64

Number of Usable Hosts:

62

Subnet Mask:

255.255.255.192

Wildcard Mask:

0.0.0.63

Binary Subnet Mask:

11111111.11111111.11111111.11000000

IP Class:

C

CIDR Notation:

/26

IP Type:

Private

List of subnet masks with network addresses, usable host ranges, and broadcast addresses.

Network Address

Usable Host Range

Broadcast Address:

192.168.10.0

192.168.10.1 – 192.168.10.62

192.168.10.63

192.168.10.64

192.168.10.65 – 192.168.10.126

192.168.10.127

192.168.10.128

192.168.10.129 – 192.168.10.190

192.168.10.191

192.168.10.192

192.168.10.193 – 192.168.10.254

192.168.10.255

It will be depend on bits, which are taken from network bits in different classes. In class C, network different sub-networks can be created with different hosts in each network. Every octet has 8 bits so it is 28 means 256 nodes, but first and last used for set and reset. In this given scenario, 4 subnets are created because I take 2 bits for sub networks.
Answer 4:
Total four sub networks created for this scenario as per requirements. Only three networks will be used according to given condition. A simple formula is used for create subnet mask.
It is depend on number of bits. 2x subnet mask will be created. Where, x is number of bits.
In this case, I used 2 bits for creating 4 sub networks.
Following are the four sub networks used for this scenario:

S. No.

Network number in CIDR

Host address range

1. 

192.168.10.0/26

192.168.10.1 – 192.168.10.62

2. 

192.168.10.64/26

192.168.10.65 – 192.168.10.126

3. 

192.168.10.128/26

192.168.10.129 – 192.168.10.191

4. 

192.168.10.192/26

192.168.10.193 – 192.168.10.254

Scenario 3:
Subnet mask and IP address of desired network:

IP Address:

197.14.88.0.

Network Address:

197.14.88.0

Usable Host IP Range:

197.14.88.1 – 197.14.88.14

Broadcast Address:

197.14.88.15

Subnet Mask:

255.255.255.240

Wildcard Mask:

0.0.0.15

Binary Subnet Mask:

11111111.11111111.11111111.11110000

IP Class:

C

CIDR Notation:

/28

IP Type:

Public

Total Number of Hosts:

16

Number of Usable Hosts:

14

Answer 1:
Subnet mask is 255.255.255.240. In this scenario, 16 sub networks created as requirement. So divide this network in small chunks as per requirements of corporate customers. According to this subnet mask, whole network is divided in different parts. All users are restricted in their home workgroups. Performance of network will be increased using this type of networking.     
Answer 2:
For this particular network, I can create 16 networks with 10-14 hosts. Therefore, I take 4 bits for subnet and 4 bits for hosts.
Following are the first four subnetworks among 16 sub networks:

Network Address

Usable Host Range

Broadcast Address:

197.14.88.0

197.14.88.1 – 197.14.88.14

197.14.88.15

197.14.88.16

197.14.88.17 – 197.14.88.30

197.14.88.31

197.14.88.32

197.14.88.33 – 197.14.88.46

197.14.88.47

197.14.88.48

197.14.88.49 – 197.14.88.62

197.14.88.63

References
Fall, K. R. & Stevens, W. R., 2011. TCP/IP Illustrated, Volume 1: The Protocols. 2 ed. New Jersey: Addison-Wesley.
Certiology, 2018. Network Devices:. [Online] Available at: https://www.certiology.com/computing/computer-networking/network-devices.html[Accessed 29 08 2018].
Cisco, 20018. IP Addressing and Subnetting for New Users. [Online] Available at: https://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/13788-3.html[Accessed 29 08 2018].
Cowley, J., 2012. Communications and Networking. 2 ed. kingswinford: Springer Science & Business Media.
Kenneth C. Mansfield, J. & Antonakos, J. L., 2009. Computer Networking for LANS to WANS: Hardware, Software and Security. 1 ed. Bostan(MA): Cengage Learning.
lifewire, 2018. Subnet Masks and Subnetting. [Online] Available at: https://www.lifewire.com/internet-protocol-tutorial-subnets-818378[Accessed 28 08 2018].
Subnetting, 2018. Subnetting Tutorial. [Online] Available at: https://www.subnetting.net/Tutorial.aspx[Accessed 29 08 2018].
Techdonut, 2018. Network management tasks. [Online] Available at: https://www.techdonut.co.uk/buy-and-manage-it/regular-it-maintenance/network-management-tasks[Accessed 29 08 2018].

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